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207802

Potassium dichromate

Name: Potassium dichromate
Brand: SIGALD

ACS reagent, ≥99.0%

동의어(들):

Potassium bichromate

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제품정보 (DICE 배송 시 비용 별도)

Linear Formula:

K₂Cr₂O₇

CAS 번호:

7778-50-9

Molecular Weight:

294.18

NACRES:

NB.24

PubChem Substance ID:

329752023

UNSPSC Code:

12352302

EC Number:

231-906-6

MDL number:

MFCD00011367

Assay:

≥99.0%

Grade:

ACS reagent

Form:

crystals

Solubility:

water: soluble (ca.29.4 g/l at 20 °C (68 °F))

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도움 문의

속성

grade

ACS reagent

Quality Level

200

assay

≥99.0%

form

crystals

reaction suitability

reagent type: oxidant

impurities

≤0.005% insolubles

loss

≤0.05% loss on drying

pH

3.5-5.0 (25 °C, 29.4 g/L)

mp

398 °C (lit.)

solubility

water: soluble (ca.29.4 g/l at 20 °C (68 °F))

anion traces

chloride (Cl^-): ≤0.001%, sulfate (SO₄^2-): ≤0.005%

cation traces

Ca: ≤0.003%, Na: ≤0.001%, Na: ≤0.02%, heavy metals (as Pb): ≤5 ppm

SMILES string

[K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O

InChI

1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1

InChI key

KMUONIBRACKNSN-UHFFFAOYSA-N

설명

General description

Potassium dichromate is a red-orange colored solid. Its crystals belong to the triclinic crystal system. On heating above 600°C, it decomposes to give oxygen, potassium chromate and chromium(III) oxide. It acts as a strong oxidizing agent in acidic media. It can be synthesized by the fusion of chromium(III) oxide with potassium carbonate and nitrate or oxygen.

Application

Potassium dichromate may be used in the preparation of hybride polymer-clay nanocomposite supported dichromate reagents. It may also be used as an oxidant for the selective oxidation of primary and secondary alcohol to corresponding aldehydes and ketones, respectively.

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pictograms

GHS03,GHS06,GHS08,GHS05,GHS09

signalword

Danger

hcodes

H272,H301,H312,H314,H317,H330,H334,H335,H340,H350,H360FD,H372,H410

pcodes

P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT RE 1 Inhalation - STOT SE 3

target_organs

Cardio-vascular system, Respiratory system

저장 등급

5.1B - Oxidizing hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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시험 성적서(COA)

Lot/Batch Number

MKBJ9981V

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국제 무역 품목 번호

SKU	GTIN
207802-500G	04061837768361
207802-100G	04061837768354